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The triploid genome of plantain (Musa spp., AA group) has been considered intractable to genetic improvement because of the production of putatively homogeneous 2n (= 3.r) gametes. Plantain breeding schemes have been based on the hybridization of 2n megaspores from the triploid plantain and haplo...


Crouch, H.K.Crouch, J.H.Jarret, Robert L.Cregan, P.B.Ortiz, R.[Segregation at microsatellite loci in haploid and diploid gametes of Musa]Segregation at microsatellite loci in haploid and diploid gametes of Musa

Progress in the breeding of plantain and banana has been restricted by the complex genetic structure and behaviour of cultivated polyploid Musa. Genetic improvement has been hindered due to the large amount of space required for growth and maintenance of plant populations, in addition to the long...


Crouch, J.H.Crouch, H.K.Constandt, H.Gysel, A. vanBreyne, P.Montagu, M. vanJarret, Robert L.Ortiz, R.[Comparison of PCRbased molecular marker analyses of Musa breeding populations]Comparison of PCRbased molecular marker analyses of Musa breeding populations

Genome size variation occurs within and across generations in Musa spp., which reduces the predictive accuracy of parental performance on progeny value for yield and other traits with complex inheritance. Parental selection through progeny testing of prospective parents is required to achieve fur...


Tenkouano, A.Crouch, J.H.Crouch, H.K.Ortiz, R.[Genetic diversity, hybrid performance and combining ability for yield in Musa germplasm]Genetic diversity, hybrid performance and combining ability for yield in Musa germplasm

We attempted to determine ploidy level in the gametophyte and the sporophyte of Musa using pollen and chloroplast characteristics, respectively. In the gametophyte, interploidy differences accounted for 63.8 % of the genetic variance for pollen diameter and 87.5% for pollen stainability, the rema...


Tenkouano, A.Crouch, J.H.Crouch, H.K.Vuylsteke, D.R.[Ploidy determination in Musa germplasm using pollen and chloroplast characteristics]Ploidy determination in Musa germplasm using pollen and chloroplast characteristics

Molecular genetic techniques may have a wide range of applications for improving the efficiency of Musa breeding and conservation. These range from analysis of genetic behaviour and structure, germplasm characterization and marker assisted selection. Restriction fragment length polymorphism (RFLP...


Crouch, H.K.Ortiz, R.Crouch, J.H.Ford-Lloyd, B.V.Howell, E.Newbury, H.[Utilization of molecular genetic techniques in support of plantain and banana improvement]Utilization of molecular genetic techniques in support of plantain and banana improvement

Genetic diversity amongst 76 plantain landraces has been studied using RAPD analysis at two levels of intensity and compared with groupings based on phenotypic indices and morphotype. There was a good correlation (R2=0.78) between estimates of genetic diversity based on 76 RAPD bands and 164 RAPD...


Crouch, H.K.Crouch, J.H.Madsen, S.Vuylsteke, D.R.Ortiz, R.[Comparative analysis of phenotypic and genoytpic diversity among plantain landraces (Musa spp., AAB group)]Comparative analysis of phenotypic and genoytpic diversity among plantain landraces (Musa spp., AAB group)

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